Flue-gas spray device



June 23, 1953 J. Llpowwz FLUE-GAS SPRAY DEVICE Filed Feb. 25, 1952 Patented June 23, 1953 UNITED STATES PATENT OFFICE FLUE-GAS SPRAY DEVICE Joseph Lipowitz, Los Angeles, Calif. Application February 25, 1952, Serial No'. 273,297

4 claims. (ci. 261-115) M y invention relates to improvements in flue attachments,

An important object of the invention is to pro vide an attachment for use in connection with a flue through which smoke, sparks, noxious fumes and gaseous elements emanate, in arresting, neutralizing and abating the escape of such unwanted elements into the outside air. Y

AAfurther object of the invention is to provide in a device of the aforementioned character an improved means having a triplicate series of independently grouped jet sprays which are directedin different directions across the path through which the elements travel before their exit into the ysurrounding atmosphere as a cure for overcoming the aforesaid objections.

From an investigation of the prior art it has beenascertained that the way is open for further improvement in devices to which this invention pertains, particularly in the manner of avoiding theV purification solution or other liquid from being directed into the ilue proper and thereby prevented from being entrapped and re-circulated.

Further, this invention includes the incorporation of novel splash means, a specificially new and novel spray head and a combination of parts which are novelly assembled.

Other objects, features and advantages of a novel character will hereinafter appear.

Referring to the drawing, illustrative of a preferred embodiment of the invention,

Fig. l is a fragmentary side elevation of the device installed in the mouth of a i'iue, the greater portion of the exterior and internal parts of the attachment being shown in longitudinal midsection. The discharge end of the device is broken away to contract the view. y

Fig, 2 is a fragmentary transverse section on line 2-2 of Fig. 1.

Referring in detail to the drawing, the device provided by this invention is shown operatively installed in the mouth of a flue 3 and comprises a short tubular intake section 4, a short tubular discharge section 5, and a bulged body portion G axially alined with and located between said intake and discharge sections. Said bulged portion 6 includes a central tubular section I and hollow frusto-conically shaped end sections 8 and 9. Centrally mounted in the bulged section 'i near its midlength portion is a liquid distributing I2 which is formedby joining a hollow cone part I3 and a tubular part I4.

The peripheral edge of the cone part I3 rests within the angle formed at the juncture of the central section 'I with the frusto-conical section 8, and is there shown welded in place to form a water-tight joint. The tubular part I4 is shown having approximately the same throat diameter as the intake and discharge sections 4 and 5 and is axially alined therewith. Thus by means of the cone part I3 there is provided a sump I5 in the angle formed therearound between it and the cylindrical `part l. The Wall provided by said tubular part I4 of the funnel forms a splash arrester to prevent liquid from splashing into the mouth of the ue 3. A drain I6 is provided and shown connected to the bottom portion of said sump.

The spray head I Il may be stated as constituting a baffle and is shown as consisting of two slightly spaced apart cone shaped members I'I and I8 of a hollow nature, the member I8 being the one nearer the discharge end of the device and the angle formed at the apex of the latter cone member being slightly smaller than that of the member I'I. There is joined to the apex of the cone member I8 a nipple I9 which is internally threaded and has screwed thereinto a pipe 2i! for delivering a liquid into the conical space 2| provided between said two cone members Il and I8.

Each cone member Il and I3 is provided with an annular skirt iiange which is deflected toward said nipple, the skirt flange of the member Il being designated'22 and that of the member IB being indicated by the numeral 23. A narrow circular ring 24, inwardly spaced from and paralleling the wall l, is utilized to connect the peripheral edge portions of the slightly spaced apart skirt flanges to enclose said liquid space 2| from which are directed the several jet sprays 25, 26 and 2 l, comprising the independently grouped, triplicate series ofl sprays.

The aforesaid struts II are constructed long enough so as to space the head away from the open end ofthe tubular part I4. Said struts are also spaced far enough apart in order to provide open spaces between them for the escape of the elements from the flue 3. In order better to arrest any sparks or other undesirable matter, such escape space is filled in with a meshed metal fabric 28.

The pipe 20 is connected to a suitable liquid sup-ply source which is pumped under pressure to the distributing head I0 and the drain pipe i6 may, if desired, be connected to such supply source. This arrangement would be the more economical way of circulating the iiuid, especially if the liquid were chemically treated so as more effectively to disintegrate and neutralize any noxious fumes or gases emanating from the ue 3.

In order more effectively to wash and aid in neutralizing the elements emanating from the flue 3, the triplicate series of grouped jet sprays function in the following manner, First the spray 25 from the apertures 29 in the skirt flange 22 is directed across the path of the elements issuing through the screen 28. Since said apertures are arranged in a plurality of concentric series circumferentially of the head and staggered circumferentially with respect to each other, the first step in initially washing the elements is effectively provided.

The second cleansing of the elements I4 is provided through the medium of the jet sprays 26 which are directed right angularly outward across the path of the issuing elements from the head through the circumferentially spaced apertures 3e in the ring 24.

The iinal washing of the elements is provided by the series of jet sprays 21 which are arranged similarly to those of the spray 25 already mentioned. Said series of jet sprays 21 are directed across the path of the issuing elements against the frusto-conical wall 9 and the liquid falls into the already mentioned sump.

Not only do the triplicate grouped series of jet sprays 25, 25 and 2l give a thorough washing of the elements during their passage through the iiue attachment, but in the fall of the sprayed liquid through the space through which the elements have to travel before falling into the sump l5 also furnishes an additional cleansing of the elements, especially is this true when augmented by use of neutralizing chemicals impregnated in the liquid being discharged from the head.

In the operation of the device the elements being discharged from the flue 3 follow the path indicated by the arrows. the cone shaped member l1 of the head corn pletely covers the area of the mouth of the tubular portion I4 of the inverted funnel member i2 and that the deflected flange 23 of the cone shaped member I8 shields to a greater extent area not shielded by the cone shaped member Il, so that the elements passing through thel screen 28 have to pass first beyond the rim of the ange 23 before being contacted by any jet spray other than that of the jet sprays 25 passing through the orifices 29. With this baffle arrangement any liquid is thus prevented from entering the flue, the preventing of the splash from the jet sprays 25 from entering the flue 3 having been previously explained.

As the elements encounter the sprays 26 and 2'1 on their further travel through the device, further cleansing and purification of the elements is accomplished.

To start the device operating simply open a valve (not shown) to the source of liquid supply under pressure with which the pipe 20 is connected.

Obviously two or more attachments could be provided in a ue either in a spaced apart relation to each other or in a tandem fashion in which the discharge end of one attachment is telescoped into the intake end of the other attachment and although a preferred embodiment of the invention has been shown and described, it is to be understood that changes and modifications coming within the skill of those versed in the art can be resorted to without restriction.

I claim:

1. A flue attachment comprising a spacious It will be seen that i tubular body portion having at each end a reduced tubular body portion, intervening frustoconical body portions joining said reduced body portions to said spacious tubular body portion, an inverted funnel shaped member having the peripheral edge of its conical part resting within and secured in a water-tight condition along the joint formed at the juncture of the frusto-conical part with the spacious tubular body portion adjacent the attached end of the device, the resulting structure forming an annular sump between said conical part and the spacious tubular body portion surrounding it, a liquid distributing head mounted in said spacious tubular body portion in an axially spaced relation to the reduced end of said funnel member, said head comprising spaced apart hollow conically shaped members providing a liquid space therebetween, said conical members having peripheral flanges deflected toward their apices, a narrow ring provided with circumferentially spaced apart apertures interposed between the peripheral edges of said flanges, the diameter of the complete head thus formed being less than the diameter of said spacious tubular body portion but greater than the diameter of the tubular part of said funnel member, a liquid supply source communicating with said space in said head, there being concentric rows of apertures in the flange of the cone shaped member nearest the intake end of said attachment adapted to direct liquid spray toward said sump while at the same time crossing' the path of elements passing from the intake end to the discharge end of the attachment through the space afforded between the tubular part of the funnel member and said head, there being also concentric rows of apertures in the body portion of the cone member adjacent the discharge end of the attachment to direct streams of liquid across the path of issuing elements after they pass said apertured ring into the discharge end of the attachment, and a drain connected to said sump.

2. A device of the kind described comprising a tubular intake end portion, a tubular discharge end portion and a tubular bulged portion intermediate of and joined to said end portions, an inverted funnel shaped member having the rim of its conical part secured in a water-tight manner to the end of said tubular bulged portion which is adjacent said intake end portion, a liquid spray head mounted in said tubular bulged portion, circumferentially spaced struts carried by said funnel member and connected to said head for supporting the latter in a spaced relation to said funnels tubular end, said head comprising spaced apart hollow conically shaped bodies having their rim ends deiiected toward their apices and secured together therealong with intervening spray apertures therebetween, the conically shaped body of said head which lies adjacent to said tubular discharge end portion having an opening in its vertex connected to a liquid supply source under pressure, there being concentric rows of circumferentially spaced apart liquid spray apertures in the deflected flange of said conically shaped body nearest said tubular intake end portion, and a drain communicating with the annular spaces formed at the juncture of said rim of said funnel with said tubular bulged portion.

3. The structure set forth in claim 2 and said conically shaped body portion of said head which lies adjacent to said tubular discharge end portion being steeper than its co-operating conically shaped body.

4. A device of the kind described comprising a tubular intake end portion, a tubular discharge end portion and a tubular bulged portion intermediate oi and joined to said end portions, an inverted funnel. shaped member having the rim of its body portion secured in a liquid tight manner to the end of said tubular bulged portion which is adjacent said intake end portion with the spout portion of said funnel member diminishing the area of said tubular bulged portion to approximate the area of said tubular intake portion, a liquid spray head constituting a baffle centrally mounted in said tubular bulged portion in a spaced relation to the mouth of the funnel shaped members spout, said head comprising twin spaced apart hollow cone bodies with their rim ends deiiected toward their apices and there joined together with intervening spray apertures therebetween, means to conduct a liquid under pressure to the space between said hollow cone bodies, there being concentric rows of circumferentially spaced apart spray apertures in said head, all of said apertures being adapted to direct a liquid spray across the path of travel of the elements after they enter said intake end portion and before being discharged through said dicharge end portion, and means connected to said device for draining off the liquid emanating through said spray apertures of said head. 

